fix #362

fix #362
fix #405 update cluster setup doc

rename old names to new ones
Temp filePeon files cleanup

Related to https://groups.google.com/forum/#!topic/druid-development/TFUNas5ubyc
cleanup() method is added but still some files are not cleaned up. Additionally setting deleteOnExit on these temp files
fix synchronization

getDimvalues can also add to the dimension, protect it properly
Merge pull request #412 from pgkiran/filepeon-cleanup

Temp filePeon files cleanup
Merge pull request #411 from metamx/small-fixes-docs-searchquery-limit

Small fixes
catching up to master
fixed minor typo
added note+link about Cassandra option